Hi everyone! I write driver for SSI and Ac97 of i.mx35. I can not update sacadd, satag and sacdat registers.
My code
void imx_ac97_write( struct wm97xx *wm9705,unsigned int reg, unsigned int val)
{
wm9705->hwc->ssi->sacadd=reg;
wm9705->hwc->ssi->sacdat=val;
wm9705->hwc->ssi->satag=0xC000;
wm9705->hwc->ssi->sacnt|=WM9705_WRITE;
wm9705->hwc->ssi->sacnt&=~WM9705_READ;
fprintf(stderr,"write :scr=0x%8X\t sacadd=0x%8X\t sacdat=0x%8X\t satag=0x%8X\t sacnt=0x%8X\t\n",in32(base+SSI_SCR),wm9705->hwc->ssi->sacadd, wm9705->hwc->ssi->sacdat,wm9705->hwc->ssi->satag,wm9705->hwc->ssi->sacnt);
usleep((useconds_t)DELAYRG);
}
int AudmuxInit(HW_CONTEXT_T * mx35_exm32, ccm_t * ccm)
{
mx35_exm32->audmux->ptcr1=0;
mx35_exm32->audmux->ptcr1=0;
mx35_exm32->audmux>ptcr1=AUDMUX_TCLK_DIROUT|AUDMUX_TFS_PORT4;
mx35_exm32->audmux>ptcr1|=AUDMUX_TCLK_PORT4|AUDMUX_SYNC;
mx35_exm32->audmux->pdcr1=AUDMUX_RXDSEL_PORT4;
mx35_exm32->audmux->ptcr4 = AUDMUX_SYNC|AUDMUX_TFS_DIROUT;
mx35_exm32->audmux->pdcr4 = 0; //
ccm->pdr2|=0x141;
ccm->cosr=0x7d00002d;
ccm->acmr|=0x11;
ccm->cosr=0x7d00002d;
mx35_exm32->ssi->scr=0;
mx35_exm32->ssi->scr|=SCR_SSI_EN;
mx35_exm32->ssi->stccr|=(1<<18);
mx35_exm32->ssi->stccr|=(9<<13);
mx35_exm32->ssi->stccr|=(12<<8);
usleep((useconds_t)DELAYRG);
mx35_exm32->ssi->sacnt=1;
mx35_exm32->ssi->scr|=SCR_TX_EN|SCR_TX_EN;
fprintf(stderr," scr=0x%8X\t",in32(base+SSI_SCR));
return 0;
}
I see always sacadd, sacdat and satag =0. WHY,
